The sequence of a 2,437-bp DNA segment from the naphthalene upper catabolic pathway operon of plasmid NAH7 was determined. This segment contains three large open reading frames designated nahQ', nahE, and nahD. The first of these is the 3' end of an open reading frame that has no known function, the second (993 bp) encodes trans-o-hydroxybenzylidenepyruvate hydratase-aldolase (deduced molecular...

Sunghae Park, Jinsoo Rhu, Dong-Sik Kim, YoungRok Choi, Dong Jin Joo, Young Kyoung You, Bong-Wan Yang Won Nah, Jai Cho, Tae-Seok Kim. Korean J Transplant 2022;36:2. https://doi.org/10.4285/ATW2022.F-0474

Three hydrocarbon-degrading psychrotrophic bacteria were isolated from petroleum-contaminated Arctic soils and characterized. Two of the strains, identified as Pseudomonas spp., degraded C5 to C12 n-alkanes, toluene, and naphthalene at both 5 and 25 degrees C and possessed both the alk catabolic pathway for alkane biodegradation and the nah catabolic pathway for polynuclear aromatic hydrocarbon...

Transetherification on polyols involving intra- and intermolecular nucleophilic substitutions is reported. Di- or trialkoxide formation of propane-1,3-diol or 2-(hydroxymethyl)propane-1,3-diol derivatives by NaH triggers the reaction via oxetanes formation, where the order to add NaH and a polyol significantly influences the yields of products. It was demonstrated that the protective group on t...

The most common direct detection methods are isolation or in-vitro cultivation, electron microscopy, immunofluorescence, immunohistochemistry, antigen enzyme-linked immunosorbent assay (antigen-ELISA), nucleic-acid hybridisation (NAH), macroand microarrays and the various techniques of nucleic acid amplification, such as the polymerase chain reaction (PCR) or the isothermal amplification method...

In the cooling system of sodium-cooled fast reactors, it is required to identify and rapidly detect hydrogen explosively produced by sodium-water reaction when a water leak occurs due damage heat exchanger tube in steam generator (SG), contrast low-concentration background permeating through SG tubes during normal operation. present study, we focus on difference between generated reaction, theo...